Small improvement to -[MIKMIDIObject isEqual:] implementation.
MIDI Testbed now displays and connects to (only) virtual source endpoints.
Fixed bad implementations of -[MIKMIDIEndpoint virtualSource/DestinationEndpoints]
Fixed MIKMIDIObject's isVirtual method so setter is properly implemented.
Merge branch 'refs/heads/master' into VirtualEndpoints
Added -[MIKMIDIObject propertiesDictionary] to get all MIDI properties of an object.
Merge branch 'refs/heads/master' into VirtualEndpoints